I'll ask again, how do you get a potential between strands in a stranded cable when there are only a few mV from one end to the other.
I’ve got some monster XP wire that was bought in the early 2000’s, it brought a heavy dullness that I never realized until changing it out.....that’s when I figured out (by trying several different varieties) speaker wire lcr does indeed effect sound.
Anyway I’ll send it to anyone who wants to measure it (if you can find a comparison baseline when new) pm the address and I’ll throw it in the mail.
The pic really doesn’t do it justice, it’s way greener than it looks, and that’s freshly stripped.....it’s like that under the insulation the whole length.
Anyway I’ll send it to anyone who wants to measure it (if you can find a comparison baseline when new) pm the address and I’ll throw it in the mail.
The pic really doesn’t do it justice, it’s way greener than it looks, and that’s freshly stripped.....it’s like that under the insulation the whole length.
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I'm happy for JC and Parasound that they are proud of their latest creation, and I'm convinced this will be a good Amp.Parasound Debuts Flagship Halo JC 1+ 450-Watt Monoblock Power Amplifier | The Absolute Sound
At 83 pounds, the new JC 1+ is 30 percent heavier than the JC 1. Its new power transformer has 20 percent higher capacity, while additional Nichicon power-supply filter capacitors increase from 132,000 uF to 198,000 uF. The new amp boasts 24 Sanken 15A/230V output transistors compared to 18 — a 33 percent peak current increase, for music that truly soars.
The Parasound Halo JC 1+ is remarkably quiet and is thefirst commercially built product to employ active high-frequency noise filtering with Bybee Music Rails™, eliminating input stage noise that compromises sound quality. Curl’s newly-designed driver stage employs a cascode circuit with greater open-loop bandwidth and increased linearity. In another first for the JC 1+, the input and driver stages reside on FR-408 printed circuit board material. Until now FR408 was used in super-computer and aerospace applications. The input-stage power supply is totally independent from the main power supply. Its R-core transformer isolates sensitive circuitry from high-frequency power line noise. This input stage power supply employs quiet high speed/soft recovery diodes and 22,400 uF filter capacitance, to deliver +/- 112 VDC rail voltage, virtually eliminating distortion. Premium Wilson Audio REL capacitors use a proprietary design, which resists micro vibrations that typically degrade the sound quality of other caps. The addition of an XLR Loop Out as well as a 12V-trigger/delayed-turn-on improve the connectivity and utility when multiple JC 1+s are used in bi, tri, and quad amp configurations.
But sometimes I would prefer not to know what's inside because the commercial mumbo jumbo descriptions border to making the product completely unbelievable, like it does with the Bybee products.
What on earth is a Bybee Music rails, and if so, what problem does it solve.
I might even have been prepared to test a Bybee, if not the description had been so outrageous.
I have tested MIT cables with positive results in my case, cables that come with additional RCL networks dressing a cable for a certain purpose, without any mumbo jumbo.
Let a product be tested by a decent magazine that concentrates on it's sound reproduction and tell where and when this product is best used.
That's the thing that counts for a potential prospect.
Most buyers of this expensive kind of products probably have not even a clue what a capacitor is, but a fantastic test in Stereophile could motivate them to buy "one of the best there is" and feel happy with it.
But of course this is all my humble opinion.
Hans
No one needs to have reflection issues if you listen near-field.
If you have mono amps near speakers, lines to PA could be longer than you assume. Just depends on individual layout.
THx-RNMarsh
So, poor design, perhaps. I'll stick with my optical links.
But still leaves the question of just how much vibration is needed to create an audible effect...
But still leaves the question of just how much vibration is needed to create an audible effect...
Meanwhile, We found the thermal tracking of the OPS bias was not tracking. New pcb layout and more OP devices, too. 🙂 That should do it. Units are at Asean show now. Heard it sounds great but have to wait until after show to get them back. Oh and upped the bias to total of 100W class A. Bias/temp is stable.
THx-RNMarsh
What amp you are talking about?
My amp thermal compensation it's a bit overcompensated, but easily fixed (if you don't want that way) by changing LED in the bias spreader with ordinary diode.
Not in Asia also. Concrete everything. All Teak wood trees cut down now. But in USA they still have trees to cut down and build houses with it. Lots of wood every where.
I will ask what they learned about bias compensation and what they did to make it track better. I was just told after the fact for some reason. let you know soon.
-Richard
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IRF... types. I had intended to change to lat but havent yet. Now we will see how the reliability is now with bias change and more OP devices.
-R
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Don't know. Maybe capacitive coupling to other balanced conductor and or shield creates some lateral EMF. Again, we are talking about small effects that are audible to some people and or audible under some not-uncommon real world conditions. Probably small EMF involved.
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Hans
There’s no voltage drop across the strands at any point along the cable. Ergo, no ‘lateral EMF’.
Since the strands are all shorted together each end, how to you get inter-strand capacitance at audio frequencies? It’s like having the capacitor plates shorted together.
Sorry, this just does not stand up to scrutiny.
Skin effect, by definition, requires current across the strands.
Wow, leave for a week or two...
Jn
For those suffering from Umbilicus Nervosa
For example, 1 meter mains cable >£5000 - unterminated.
Here’s a nice wiki on skin depth with formulas Skin effect - Wikipedia
For example, 1 meter mains cable >£5000 - unterminated.
Here’s a nice wiki on skin depth with formulas Skin effect - Wikipedia
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Incorrect.
Google skin effect
Edit: also, proximity effect.
Then examine the current density distribution in a standard #12 AWG zip at 10 and 20 kHz.
The question then becomes, how can a totally green stranded wire support the toroidal current profile required for proximity and skinning?
Jn
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Not inter-strand, rather inter-conductor (if XLR) and or conductor-to-shield capacitance.
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I just did - see the post above. Mark is talking about ‘lateral EMF’ between conductors
I edited my post to include proximity effect, you missed it.
And, your verbage was not addressing what Mark said.
I will not re-copy and paste your statement again, you were incorrect.
Jn
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